I purchased my BH while on vacation in panama City Fl. about 5 years ago. I'm pretty sure its still under 5 years. My ground balance isn't working right . They told me to send it in along with proff of purchase which I lost. Whats my chance of getting it fixed under warranty at no charge. I'm retired now and can't afford a large bill. It also needs a tune up . ID #'s jump all over the place when I lay a coin on top of the ground and test for ID #. How much do you think they will charge me not knowing whats wrong with it.