Hello all I have as Celwave 4 can band pass reject. I noticed the repeater emitting beeps because the MTR drops power down and alerts you with 2 beeps every 10 seconds during a transmission. After investigating, I found that the jumper connectors are lose and appear to have become dielectric. I also noticed the jumpers were made of RG8 with the typical N connector. I have replaced all of the jumpers with new N connectors and LMR 400. After doing this, the SWR is up to 4.xxxxx. I have matched the length of the old jumpers. So to summarize my questions, can I use LMR400 for jumpers? and do I need the have the duplexer tuned with the new jumpers? Thanks