hey guys my unit is acting a little wacky when i try and run it deep ,past 60 70fow lose's speed and temp jumps all over the place and it kinda trys to work like speed will start to come up but then back down it goes , changed battery, re-terminated it clean right to the probe, checked wiring anyone else have this problem thought i heard of the same thing on here once before, thx for any help. Capt.john