The hole for the cross beam shaft in the cross beam bearing block was not drilled perpendicular to the sides of the block. After the cross beam assembly was adjusted for piston freefall there was impingement with two of the shaft ends supporting the piston connecting rod. The two stainless steel arms fastened to the block had to be removed and bent slightly to remedy the impingement. After reassembly and readjustment for piston freefall the engine ran fine. Other than that, fit and finish was quite good. Great value.