Oh dear, what a nightmare!
Not for the feint hearted, it was more work than I was led to believe but am now an "expert" ha ha. It was all going ok until I realised I didn't have the skill to set it up to the same level as the old Block, but after getting Felder to come out and re commission it which took about three hours it is much quieter and easier to push on the Planer and the finish is better than the four blade head I replaced. The new cutters should work out cheaper in the long run but it isn't about the cost just the finish and noise.