Long time lurker, first time poster I'm in the process of ordering all the parts to build a longslide glock 20. I've researched for I don't know how many hours one last piece of information, and all I can find is opinions. The recoil spring and guide rod (crazy you can research for as long as I have on something so simple, lol) So... two questions I hope somebody who has actually built up a longslide glock 20 can help me with. 1) Lone wolf says on their site that you need a special washer when you order a guide rod for the long slide setup. What is so "special" about this washer, and can you use other makers guide rods, as long as they use the flat spring (as opposed to the round wire springs)? 2) What is the preferred weight to run. I've seen stock, 20lb, and 22lb. I've purchased a 22lb from glockstore, but left in in the original packaging for now, because I just don't know. Again.. lone wolf says stock spring assemblies and wolff springs are a no-no. The assumption is that I want to run with 100% reliability, anything from underwood hot loads to PPU range rounds. Yeah.. I know.. tall order.. but if you don't ask.... I'm hoping to get help from folks that are in the know. I found the longslide forum here, but there isn't a whole lot of information there either, so I figured I'd start with the 10mm crowd first Wanna kill these ads? We can help!