twin dhla 40s and pcv

hi eveyone
i just put my twin dellorto 40s on my 1600 in my van got them running. after trying to tune them with a manometer  i worked that number 1 is missing due to the pcv hose being connected to were the booster connects up cause im running a pedal box and have that port spare. it sounds lik the cars pinning but when i block the vaccum port of at idle it sounds good anyway im asking what to do as i dont want to run a oil catch and im cramped for space already. was thinking of drilling out the pcv and running a pipe from the oil seperator straight to the oil filler cap or drilling out the pvc and running a hose with filter straight into the atmostspere. anyway any advice is welcome