Castor on 100 series cruiser

I am about to give up at the min , I have had the cruiser to 2 wheel alignment places with different results.

I was told by the first alignment place , that my Castor is now 0 and i should be running a negative toe in . As I left car was pulling to the left .

I then took it to another alignment place and was told I have a - 2 deg Castor and the toe-in should be set positive 2 deg . This is causing tyres to scrub

Now from my days as a mechanic , I remember that rear wheel drive cars should have negative toe-in and front wheel drive cars a positive toe-in

Now my cruiser has had a 100 mm lift in the front and 115 in the rear , so I should be out by roughly 3 deg .

This is the crazy part . When looking at the spec's on both machines , they didn't specifically have my vehicle on it . The had vehicle classification up to 98 as a 80 series and after that there was a 2000 TD or 4.7 V8 . Now there IFS , so there readings are irrelevant.

Could anyone here shed some light, I will try BJ on Friday and see what there machine say's . The reason for all this before Castor bushes , is to see how far out my alignment is , as to purchase the correct Castor correction kit.

Regards RC AKA TUF100