RE: Nelson q500 throttle linkage
Randy, where have they broken? I've been running them exclusively since they came out, and have had zero issues. However I have seen one pull the fuel line fitting out as it's a press fit. I can see where if you're constantly pulling on it to refuel that it may be pulled loose over time. I don't remove the fuel line at the needle, I use a filter and pull the line at the filter for fueling. Attached is a pic of my Proud Bird installation, but it's similar to what I do on my Q500's.
Periodic defects are going to happen, I actually had one of the standard needle assemblies break at the end of the threads for the nut that holds it in place about 15 years ago.