Hi
Here's the update on my replacement seat. The Wassell seat has been returned!!
There were, in my opinion, too many faults;
The rear mounting holes were were too far apart.
When the front bracket is fitted the seat is way too high and about 1.5 inches too far back.
The seat padding was very 'curved', it was like sitting on a barrel!
I was tempted to cut away some of the padding to make the profile more 'original' but the Wassell seat cover is glued on so can't be easily removed.
All the thread inserts are metric thread.
All in all I think the Wassell seat is a very poor budget seat and should be avoided if possible.
This has been an expensive lesson for me (I got a refund but still had to pay the shipping). I should've gone to Leightons in the first place. They sell a new moulded foam padding of the correct profile for only £39, a real bargain.
Frank