my husband is replacing a diverting type tub spout. Needed new nipple (old one corroded). 5 1/2" nipple is too short(cant tighten all the way) and 6" nipple too long (1/4" gap with wall). He used the 5 1/2", but only "hand tightened it" so not very tight. He first tightened the nipple into the spout then attached that assembly into the pipe in the wall so the loosely tightened part is behind the wall-Did he do this correctly?.Should the nipple of be screwed to pipe in wall first? Please suggest better solution

Hi all, my first post and I apologise now because I know absolutely nothing about toilets lol. My toilet has not been flushing or filling properly for the past three days. To flush it, we have to really quickly pull the lever a couple of times, but sometimes this does not work. I noticed today that the tank isn't filling properly, in my picture that I've attached, the 'thingy' that's in the red circle rises, yet if I push it down it allows the plastic 'thingy' in the blue square to drip the water in to the tank (I'm so so sorry!! haha) but even when the tank is full, it still isn't flushing properly, but does sound a little healthier. We wanted to see if we could do it ourselves, but not entirely sure what the problem is. Thank you :) :)