I recently bought my first eBike, an Origin 8 Crawler with a 36v 350w mid drive and Nuvinci N360. The N360 sprung a leak early on while climbing a very steep hill. A few rides later it broke while powering up a short but steep hill. Nuvinci sent me an N380 replacement. It also sprang a leak on a short but steep hill. I can't keep breaking these things. I am contemplating two opions: 1. Sell the N380 (the new one under warranty replacement) and install a cassette, or 2: Replace the front sprocket with a smaller (current is 6-inch I think) to make hill climbing easier. I really like the Nuvinci drive, but I'm concerned my area and terrain is too much. Will lowering the gear to make it easier to climb hills spare my next N380 replacement, or is this thing going to fail under pressure every time?