Houston!!! We have a problem... er... melt down... oops! While running my bump-n-go trolley today, the black cap popped off the bumper, the spring popped out and we had a fire The spring is now severely deformed and the cap has a melted edge. No worries, I got to the transformer in time to turn it off, and the trolley is fine. But... the question here is can one find replacements for these parts. The cap can be used if push comes to shove, but the spring, last rites I'm afraid.