The silencer joint overlap is much longer on RH side compared to LH.
If you loosen the headers and adjust them at the same time as you are fitting the silencers, you can get the overlaps even on both side. Find a piece of wood, 30mm thick and strap it to the front coil-over to ensure you get sufficient clearance to the headers on each side. It's a bit of a juggling act but very satisfying when everything fits together perfectly!
