Power flushing seems to be bad for them.

The torque converter doesn't drain, so you only get about 1/3 of the fluid out. Drive around to mix it up, then drain/fill again. If it's nasty dirty, it may take more than 3 times before it's clean. Just gotta look at the stuff that drains out & use your judgement.

Use real Honda ATF from the dealer. It seems to make a difference.