last week I installed a new in-tank fuel pump and a new fuel sending unit my fuel tank was full at the time. I could not find the position to re-insert the sender with the float in the down position, so I swung the lever up and it went in easily. I tapped the ring back on, reattached the lines and figured I was done and finally had a working fuel gauge. as my fuel gauge hasn't moved off of full in about 60 miles of driving, I'm wondering if the float arm is trapped and can't move down. can anyone advise me, please?