HI timz,
i have one option,
first make your Min RX lev of 1800 layer to 75 or 85dBm and make CRO to lagge amount as. 30 to 40 dBm ( i know u say it unhealthy pulling traffic) but remember i have put access leve to 75 to 80 dBm so that good level of strength is achived, this enable the near all traffic(indoor and outdoor ) to clamp in 1800 with required rx lev then, also modify the HO PBGT and HO RX Lev accordingly , iam sure it will work… Hope this will help u