keep getting low tires but only on the front axle. never had a tandem trailer before either. is it possible that tight turns are causing this? new tires, cleaned up beads on rims and put bead sealer on them all but keep going down AFTER trips usually. fished last sat. and all were at 45 psi but when I got home one front was 16 and other was 34?? two on rear axle and spare doing fine??