Rocker clearance issues

[philstar]

I have built up my standard 1600cc engine using the 043101355CK heads (https://www.coolairvw.co.uk/Item/Shop_by_Vehicle~Beetle_Products~Beetle_Engine_Products~Barrels-C-_Pistons_and_Cylinder_Heads~Cylinder_Heads~Standard_Cylinder_Heads~Twin_Port~1600cc/043101355CKPAIR/1600cc_040_Twin_Port_Cylinder_Heads_-OB-Pair-CB-_-OB-32x35.5-CB-_-_1971-79_-_T1-C-T2-C-KG-C-T3.html) and 311198069FR barrels and pistons (https://www.coolairvw.co.uk/Item/Shop_by_Vehicle~Beetle_Products~Beetle_Engine_Products~Barrels-C-_Pistons_and_Cylinder_Heads~Barrels_and_Pistons~Standard_Barrels_and_Pistons~1600cc_-OB-85.5mm-CB-/311198069FR/1600cc_Barrel_And_Piston_Kit_-OB-Cast_85.5-CB-_Reproduction.html) from CoolairVW, however, I cannot get my rocker arms to sit correctly on the stands, they are too high. I have backed the adjusters right off but there still seems to be too much tension, I am reluctant to tighten the assembly down. My pushrods are the standard 280mm (https://photos.app.goo.gl/FAmnNGFZ292u893j6).

When assembling the top end, I did a mock-up first to measure the deck height which came out at a perfect 1.50mm (https://photos.app.goo.gl/eEvzdgTznBGtZzb16) without the need for any spacers. Previously, I had 2 shims below each barrel (approx 0.95mm and 0.85mm), however, that must have been required for the old head/barrel combination.
Does the standard rocker arm assembly require shimming with these heads to ensure it provides enough clearance? Or should I switch to shorter pushrods?

 

[philstar]

...I noticed I hadn't screwed the pedestal studs in all the way which was stopping the rocker arm from seating properly...ahem... anyway another issue, one of my head studs is longer than the other and is preventing the left-hand rocker shaft from sitting flush (https://photos.app.goo.gl/cnziapAXdpuRuiBA7) - am I ok to cut this down, or should there be one longer head stud at some point on the engine, meaning it is in the wrong place?

 

[sparkywig]

Are you sure that the longer head stud is screwed into the case properly, or has it pulled out when you torqued the head down?

 

[philstar]

It hasn't moved during head torquing, it was already longer than the others. Trouble is I put the (brand new) studs in quite a while ago so can't remember the reason behind it.

Is it safe to remove a single stud and re-insert it, or would I have to remove the head, associated barrel and piston?

 

[sparkywig]

You should be OK just changing one stud.

 

[K@rlos]

Are they 10mm studs or 8mm with case savers?? Yes removing them is fine. I normally aim for 1-2 threads proud of the nut’s.

 

[philstar]

Thanks fellas, it just wasn't screwed in properly, lord knows why I missed one. This engine build has been interrupted too many times!