I had the same problem with mine, I went to Industrial Metal Supply where they had small metal square tubing. Bought a stick of the size that fit snugly on the sensor, crimped it down a little, and put it in.
No problems so far.
"It doesn't swoop, curve, or look like it's going fast when it's parked. It never looks like it's going fast. It doesn't go fast
." - Richard Hammond, BBC Top Gear