Hi NormK,
With regards to the mounting of the tap, I suggest you to put JB-Weld around the bottom part. The same glue I used to fix the cracked plastic fuel tank of my 2-stroke utility mower (handle mounted fuel tank) 4 years ago. Cracked due to aged and handle vibration. We use this mower every time and since then I don't have any problem. If someone is interested on this fuel tank fix, I can start a new thread for this and detail the fix.
Cheers,
TheCarbyMaster