stiff suspension

[Stuart]

I've converted my 1303 convertible to the suspension of a 1986 Porsche 944T. For the torsionhousing I use the covers of a Porsche 911. The torsionplates have a VW inner and Porsche 944 outer bushing. The problem is when I bolt the torsioncovers to the car that the suspension is very stiff. The springplate will only move with effort. Should I put spacers behind the covers? Help welcome!