I have seen the video on taking the pump apart to clean it - not too bad.

Is there any issue popping the input line side open and spraying brake cleaner in it to clean it?

I do it all the time with the brake clean. As long as the veins aren't seized.Then a shot of WD and i'm back in action. Going on 6 years with the 4 and no kit yet. Still pulling 15".

Sounds good - thanks!

If your shaft isn't loose from the front bearing and shaft being trashed then cleaning with brake clean while its running is just fine. then pour a small amount of oil in it to lube things up.

Shouldn't have to clean them unless your getting water in there like with alky combo's. I have run both gas and alky, on some cold mornings I did the brake clean trick when the vanes where stuck but normally a little heat from warming the motor up freed them. Never had to do anything with gas.