Yes, you have to rotate the crank to have the cam in a certain position so there is no load on the lifter and spring. Back off all the bolts and rotate the deflectors around and torque the bolts down in sequence, I believe the torque is 20 ft lbs. I have scan the rebuild manual for the sequence. Hope this helps.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.