Well fitting was pretty easy (ive opened up the -ve chamber b4 so pretty happy with that part anyway)
I just left the seal head in a cup of hot water for ten mins, used the 2 quid ebay golf club holder in my bike workstand clamp and it unscrewed with a bit of force, but way easier than expected
I used Granville bearing fit & studlock as it seems to have the same spec as red loctite.
Only ridden it up and down the road, took out 2 tokens as suggested and extra 10 % PSI and its very plush and a bit brake divey, but sag is at 30%, and i susually run 20-25, so ill try for some extra PSI then maybe a token, wont get a proper ride till next weekend at the earliest tho