[Amps] Replacing relay fl-2100z

[Abele]

Hello everybody,i would like replacing relay of my fl-2100z because also in
off when transmetting with the rtx only,
there is hight swr expecially in 28-21 this is because the impedence it
increases when climbs up of frequency,this I have verified him with mfj-259b
analyzer.I asked if someone has replaced the relay even with vacumm relay
(what model?)
Many thanks,greatings IK2SGB