I'm looking for a replacement heated throttle grip that's firm/hard to put on my `77 damaged Convert. throttle. It doesn't have to heat. I know many brand grips sell replacements separate and that's what I'm looking for. My Hot Grips throttle on my 750 Breva is hard but they want as much for a new 1 as other brands cost for a whole set! Can anyone here recommend another brand that will meet my needs for just a hard throttle grip? Thanx