I've got a "51" Aerometric that was a "gamble" on ebay and it is mostly OK except the sac is punctured. What is a source for replacement sacs for the "51"?
Are all the Aerometric variants the same size, i.e., use the same sac?
What is Pli-Glas, really? And what do we replace it with? A silicone sac? What size?
All advice appreciated and I'll report on my progress or lack thereof.
Andy