I had zero luck with the crimped fittings. After the 3rd one started to leak, I switched to Aeroquip EZ Clip system. The hose is almost half the OD and it's a a simple squeeze of a plier type tool to lock the clamps. You can assemble everything, adjust all the fitting clockings and then click all the clamps, done. Fittings are reusable.

https://youtu.be/a3k1zDGNujI?si=8U_cJ-956br3VTpT

Kevin