Need a little help. Silverton 28' Sedan 1977, almost newly rebuilt (100 hours) Chrysler 360 with Paragon 1.5:1 V drives (also rebuilt/refurbished (?)). On one engine I noticed after putting in the water that the shaft turns in neutral, shifted at transmission and seems to be going slowly forward in neutral, when shifted to reverse kicks in right away, then through neutral shifts well into forward. I can hold the shaft by one hand (a little dangerous) but it wants to turn (I can easily over-power it). Fluid seems ok when checked (engine off). Did not happen last year. Been out of water for 5 months. Any ideas? (other engine normal) Thanks for any help