yiddlers to be honest with you I did not know it had an extra end cap...I'll see if I can get them sent...
That would be great! I already got my hands on one of the extended end caps (cause I sent the spring flying, never to be seen again when trying to adjust it), but I think you'll find that people are going to be asking for them. It works well for both a single 18650 or two 18350 batts. There's not as much pressure exerted by the spring to cause damage, but enough so that it functions well.