I took apart my 275C for the first time after more than a year of use.
the usual 275C quality 
a little dust inside due to normal wear or some dust that got through the filter. cylinder is still smooth inside, bearings are still tight. no obvious loosened parts. just did a little cleaning.
except for one, the PTFE piston ring. there is a little tear about a couple mm long. the pump has slowed a bit from what I remembered although it can still pump to 125psi no problem but Iām sure the tear will start growing bigger and bigger later.
To Lance: is a replacement piston/crank assembly available for the 275C? or did I just found a reason to upgrade? 
