You might consult with Topham before trying to tape the spigots; it might not be necessary, and my gut feeling is that fuel vapors would eat up the tape in pretty short order. Defects of the XS Performance PWK knockoffs are well documented, but I haven't seen any complaints about the boots. As I mentioned above, the TM pumpers are heavy, and any boot that lacks the support of the OE metal shroud will fail at the spigot end. I found that out the hard way with a pair of JBM boots, which are very tough items--they failed right where the spigot section ends and the flange section begins. PWK boots may hold up for you if you support the carbs with a stiff spring or rubber damped bracket. Re. AP adjustment, I like the pump to actuate at around 1/8 throttle and stop at around 7/8. You might use that as a starting point, then experiment with adjustment to see what feels best to you. Just play with the AP adjusters a bit, you'll see how they work in a hurry.