RE: Fuel Pickup Tube Question
When I replace the pickup tube, I usually cut the pickup end at an angle. When curved around, it won't sit flat against the backplate and block fuel flow.
Secondly, if your replacement tube (small ID silicon fuel tubing works fine) does not fit the fuel nipple tightly, it can pop off when bent back. If that's the case, you can take some unwaxed dental floss and tie a loop around the tubing, behind the nipple barb, to secure it.