Its been a long time since my last update, but i can return with some good news!!
After the boost hose shenanigans with pipes popping off all over the shop i eventually managed to get them sorted, the rolling tool was an epic fail in all honesty, and i ended up using the method suggested by fudgey with the mole grips, it does indeed do the job, but with 16 ends all to flare it was a proper pig of a job, involving sitting down for a long period snaffling jaffa cakes and swearing to myself about how much it was hurting my hand clicking those grips shut a million times.
With all that lot back on it was time to take it for another sly test run under the cover of dark. All the boost leaks were gone, but we were still only seeing around 10psi of boost

we laid her up in the garage for the night, still feeling pretty suited nonetheless