Posted for "Pat and Sue Brunner" <n98pb@sbcglobal.net>:

 Mike
 Thanks for the comments.  I think some of the ideas can work in the IVP, but
 some won't, especially through the bulkheads.  Will keep at it and maybe
 I'll find the fix one day.  Til then my bride will continue to be upset at
 each fuel change with the expectation of some loss of cabin pressure with
 the loss of engine.
 
 Pat Brunner
 N98PB