No problem Chris

The 26805 one is a new catch for me - the others (namely 27425, 27445 and 27515) are heard quite often. My assumption is that these taxi companies are using export radios with vertical antennas (so anywhere from 20w to 100w AM power). The dispatchers are usually YLs and have elaborate roger beeps or even music playing under their voices as they transmit. I'm listening to the 26805 AM station right now (2335 UTC). The other usual Mexican AM frequencies are also active: 26555 LSB, 26575 AM and 26585 AM. Nice audio from a station on 26575 AM pushing the needle to the wall. These Mexican high power stations run several kilowatts.
Other frequencies I've logged this evening (band appears to still be open!) Notice the pattern with the band (alpha) designation + the channel number:
26105 AM - Band B channel 4 - English and Spanish language traffic, appears to be truckers
26135 AM - Band B channel 7 - Spanish language traffic, possibly taxi dispatch
26555 LSB - Band C channel 4 - Spanish language traffic, heavy QRM
26585 AM - Band C channel 7 - Very busy calling "shootout" channel. High powered stations
26615 AM - Band C channel 9 - Spanish language traffic
27065 AM - Band D (legal CB band) channel 9 - Spanish language traffic
27455 USB - Band E channel 4 - Latin American calling frequency
27515 AM - Band E channel 9 - Taxi Dispatch
Channels 4, 7 and 9 appear several times here. I believe the common practice for many of these operators is to simply pick a channel and then move the band switch up and down until a clear frequency is found. A large number of export radios are NOT equipped with frequency displays. Just a channel display plus a bandswitch. Some radios complicate things further by having a 3 or 4 position bandswitch plus a "high band/low band" toggle switch that turns those 3 or 4 bands into 6 or 8 bands. Very easy for somebody to find themselves in the middle of the 10 meter CW portion without realizing it (or caring). Interesting that 26555 LSB is the "lowers" sideband frequency and 27455 USB is the "uppers" sideband frequency. There is a method to the madness that is 11 meters.
For the most part I have noticed that Spanish language traffic, especially on the "uppers" side (that is, 27405 to 28000) is usually in USB, and English language traffic is mostly in LSB. The notable exception being stations working on 27555 USB and those that have QSYed from 27555 USB. This afternoon I heard a lengthy QSO on 27550 USB between several US stations and a Brazilian station (IDed as 3 Radio Charlie 014). They had QSYed from 27555 USB.
On top of this, the vast majority of traffic heard on the "lowers" (that is, below CB channel 1 so 26965 and down to 25000 or so) is in AM mode. The exceptions being 26225, 26235, 26240, 26500, 26540 and 26555. Everything else is in AM. This includes US based stations (26915, 26885, 26835, 26815 and 26775 are the common ones I've heard truckers/American freebanders using - all in AM) as well.
I don't know if I'd call it a "gentleman's agreement" but considering the illicit nature of 11 meter freeband it is an interesting thing to note. Given that 11 meters is effectively abandoned by other services (save for OTH radar) and there is effectively no enforcement of laws on this frequency band - the 25-30 MHz range will remain a fascinating, albeit lawless, corner of HF.