[Closed] Mutsu Ti build help

Building up a PX Mutsu Ti frame with 12 speed XT.

Bike shop rebuilt a boost hubbed 27.5+ wheel with a deore XT microspline hub. I had already put a boost wheel in the frame which had a 3.0 tyre on it and the chainstay clearance looked fine, so went ahead and ordered some new 3.0 tyres.

Just fitted the chain and Rear derailleur, and the big problem is the chain on the largest cog is rubbing the tyre.

Now is this because I’ve got too big a tyre in the frame (Brant, Brant, Brant). Or is the chain line on the deore crankset too small, the lbs ordered in the 52mm chainline version, they did know it was for a boost frame, there is options for a 55mm deore crankset.

Help appreciated.