100 % better!! Once you have the lock in, file the forward part of the plate's bolster so that it lies no more than along the centre line of the bore - a little below is fine too. Then the wood can be cut down too, to straighten out that line, and to reduce the amount of wood in the forearm which will help to avoid that slab sided effect. Remember, the forearm is not flat along its vertical plane, but gently rounded or ovoid in section. T/C missed that little point by a country mile, and a lot of contemporary builders, whose experience with muzzle loaders is limited to that kind of 'replica', recreate the mistake on their builds.
Your rifle is coming along famously.