my circa 2014 maxxfan deluxe 7500k, the knob/handle for the lid is a cheap easily replaced piece held in with a single screw. it fits directly onto the splined shaft into the cover lift motor, which is also an easily replaced part. i had to replace the gearbox above the lift motor that actually lifts the top, that required coming in from above, so was a more difficult job, but still not hard to replace.
lets see, for a manual lift (5100K – 6201K), the knob is 05-21236K and screw 10-21241K
For an automatic lift, (7000K – 8951K, 8700N, 8900N), its part 10-20223 and screw 10-20265K
these run about $5-10 for the knob.
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