Are the powerjets threaded in or is the epoxy the only thing holding them in? If they thread in i wouldnt worry as much about alky compatablity. Im gonna try lock tight 5min epoxy on my next set. comes with mixing nozzle all you do is squeeze it out and apply. i have used plastic weld before on the bowl barbs with no problems. you should sent those abortions to dennis like we told you last time when you had the wrong needle and seats. btw, want to sell those 3.5? send me a pm if you do