I've had a good read through this topic and I very meticilously rebuilt my shocks today - in the hope that
1. I degreased and cleaned the lot (brake cleaner on metal parts and dish soap for the plastics and rubber).
2. A new set of red O-rings.
3. Lower internals assembled per manual but with an extra 0.2mm shim between the o-rings to and plenty of AE green slime - I hope the slightly squished o-rings will reduce leakage and the green slime keeps the movement smooth.
4. Oiled all the seals and shock shaft before assembly.
5. I pushed the internals/lower cap over the shock shaft before it was screwed into the cylinder (normally I push the shock shaft through the cylinder with the lower cap screwed in, but I noticed the chance of damage is much higher like this).
6. I used the bleed screw for filling the shocks.
The result so far? It feels like the o-rings give a bit more friction (promising when it comes to a good seal I guess), yet this may well be the smoothest set of TRF dampers I've had so far - not bad for dampers that (apart from the o-rings and oil) have done 1/2 to 2/3 of a season without much care to them
I guess I'll find out if this extra effort and time (this took more than twice the time I normally need) is worth it... My previous shock setup tended to leak out 10-15% of the oil in three meetings, I'd like to see this to take at least the double amount instead. I'll report it in this topic what the outcome is