Propshaft Spacers

Can anyone provide me with the thickness measurement of the center bearing spacers for a manual tt. Alternatively, can anyone say for sure that manual & auto are the same thickness.

I have just done an auto to manual conversion and am having prop vibration problems. I have checked all the usual and re used bearing and gearbox mount from my auto which was perfect with no problems. I get my prop back in the morning from being balanced but having read through some previous threads, it appears that the angle of the front and rear u/v joints need to be the same. The manual prop is longer at the front than the auto so if I use my auto spacers, surely this will affect the angles?

Would like to find out for definite if they are different thicknesses before putting it back together as its been in and out more than times than I care to mention.

Anyone have any comments?