Thanks for the reply Gnarls. i haven't physically checked the float level, just peeked at it through the wee sight glass. i will source a new AAP diaphragm and pop it in and report back.
well, i got the new diaphram in, the old AAP looked to be intact. it looked like it may have had a tiny pinhole in it, but i couldn't tell. i parked the truck facing downawards in my driveway for 15 minutes and took it out for a drive and it seems to be operating correctly, but it will take a week of driving to tell for sure.
