According to me, you did a great thing to remove the monomassa (the tractors leave them to farmers). For the problem clutch just put a reinforced (no florentine ? ....too) and tries to provide a torque delivery as pi? possible linear up to 2000g/m, you will see that you will not have problems.
For the speech rolled serves not only to be cool with friends, but also to understand how to optimize the delivery.
p.s. you have removed the prekat(at least) true? If I were you, too everything except the silencer, in this way, take a nice p? of back pressure flushing slightly at the bottom (the critical area for the clutch) and redo the vgt (why? the turbo would rise, too). For the review, don't worry, just do it with the engine up to temperature and if the rapp stechio ? almost? right (why? with the diesel ? impossible to do it right) steps up to 100%.