I know that this has been addressed before . I just got my ace 250 yesterday and the shaft wiggles badly / the shaft tends to bend when doing a pin pt with the quick side to side motion. I know I can use teflon tape where the 2 shafts meet . B ut the pvc shaft that connects the coil will still give. Has anyone tried to put builder spray form down the shaft to add some rigidness so it will not bend or give on a swing?!!!