Help with Koni shocks assembly

[Kiwi Dave]

So I got my first lot of back-ordered parts yesterday which included my Koni coil sleeves and hats. Great - I can make a start on the front suspension.

My problem was immediate. The spring seats (supplied when I got my kit 2 weeks ago) get about a quarter turn and then bind like they are different threads. Same for all 4 in any combination and same whether the spring seat is threaded on from either the correct orientation or reversed. The locking nuts are not the issue as they can be completely removed with the problem remaining. The threads on all parts seem OK. The coils sleeves fit over the shocks easily - I was expecting them to be a fight based on others experience.

Do you think I have mismatched parts, is that even possible, or am I completely missing something? These should thread together easily.

It's a bit disconcerting when I can't thread these on a part that might "cause serious injury or death" if not assembled correctly ;-)

Cheers

Dave