There is so much negative info out there, I had to dig em out and look. I bought the MM kit with metal upgrades about 11 years ago for $150+ The handle is by Rylo, the nozzle by DStines. There is no issues I can see except a tiny mismatch on the P1 front to rear. The body is signed by quality control?
The JLong kit has a P1 that is longer and mismatched front to rear by a 1/32”. There is also a side to side mismatch.
There is nothing that can’t be altered by the prop maker. -SGT