I just replaced the battery on my 750 with a 12v Durocell type 51R battery because it's the only one I could find that would fit my 750's battery box.. It has metal tabs approx 1/4" thick x 1" wide x 3/4"high. instead of the regular round posts. Does anyone know where to get battery cable terminals that would fit a metal tab post? OR...what kind of replacement battery do 750 owners use?