I certainly built them all but about half are from instructions from t'interweb, sometimes modified a bit. The rest are developed from other peoples' ideas and one bit is completely my own design. It's obvious when you watch a show video that everyone uses published designs for at least some of their modules. Some are brilliant builders and others, like me, aren't.....
Don't be so hard on yourself.
The non-brilliant builders are the ones that bring a module to a show that haemorrhages balls at such a rate they need an attendant to pick them up and keep the flow going.
Very true. We had one of those at STEAM last year plus the next module jammed all the time.
I do have one that spits balls and I know why but finding a solution isn't easy. A pity as it looks great when it works.