How have you guys been able to get the tension spring off the JD 335 lawn tractor? It's about 18" lg., 1 1/2" dia. with about 5/16" wire dia. This is a very strong spring & there's no room under the tractor to use a tool to pry either end of the spring off its anchor point. The spring must be unfastened at one end, or you can NOT remove a bad traction belt for replacement. HELP ~ anyone? Many thanks.