Thanks again. I think the XPC rework may have changed the seat some.
Took the snorkel off and it's still a labored fit.
Would like to see you photos (for reference) I'll PM you my e-mail address so you don't have to go thru the trouble of hosting pictures for the thread.
@ This point my next plan is: unstaple part of the cover - attempt to refit - restaple. Ay-ya-Ay.