This original thread concerned the "lumpy" fit of Heritage carpets on the centre shift gearbox cover. Others are now piping in with their results having installed carpet on the side shift models. <span style="font-weight: bold">Owners of side shift gearboxes throwing their 2 cents into this discussion only confuses the centre shift carpet subject.</span>
Please keep in mind that the side shift gearbox covers are vastly different with very simple surfaces and only a couple darts sewn into their carpet allows the fit to be smooth and virtually perfect.
Not so with the centre shift covers. They have tapers, undulations, lumps, hollows, everything to cause carpet to lump, wrinkle and distort.
At most customers' insistance (including mine) Heritage has tried to duplicate the original darts and seams that the factory trimmers did, and the original stuff was lumpy too. True, over the years the original stuff finally more or less followed most of the contours after being exposed to moisture, baking in the hot sun, etc. But it was never a really good fit like the early side shift carpets had been.
So here we are today with some of us insisting on true to originality and ending up with some lumpy carpet, while others choose to try other non original tricks to help improve the situation.