I forgot to mention we ran stranded cat5e instead of solid core for this reason. Going in tomorrow so will do some more testing. Really hope I can find the issue, don't want to run a bunch of new cabling.To transition from Cat5e to stranded wire you should be using something that allows an IDC / Punch-down connection for the Cat5e and possibly a terminal strip for the stranded wire. You just can't / shouldn't solder UTP. Search online and you will find several items that do this in one format or another. Most are RJ45 to terminal strip. https://www.google.com/search?rlz=1C1CHBD_enUS801US807&sxsrf=ALeKk03RQJJBaJXgHSRMxUVMIJ-S9tH_ag:1598457496222&ei=mIZGX438DKqk_Qazs6xg&q=rj45+to+terminal+strip&oq=+to+terminal+strip&gs_lcp=CgZwc3ktYWIQARgAMgYIABAHEB4yBggAEAcQHjIGCAAQBxAeMgYIABAIEB4yBggAEAgQHjIGCAAQCBAeMgYIABAIEB4yBggAEAgQHjIGCAAQCBAeMgYIABAIEB46BAgAEEc6BwgjELACECc6BQgAEM0COggIABAIEAcQHlCyiQJYl8YvYOjcL2gAcAF4AIABgAGIAaAKkgEEMTYuMpgBAKABAaoBB2d3cy13aXrAAQE&sclient=psy-ab
This is something we do a lot of using in-house parts but I'm sure you can find something online.
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