My 6 volt batteries have seen there better days. I decided to change them. I can not for the life of me remove the battery helmets from the post. I have already destroyed one of the old batteries, after hours of cocking around. I've tried everything. They will not budge. I've tried the battery terminal lifter. That's all bent up now. I've tried prying, banging, lubricant etc What's a man to do? MK