update re this:

i opt to find another mech and again we opened the ch. ayun, nasira ung ch gasket na nilagay ng bobong mech.in my observation, replacement ang inilagay n gasket (npakanipis compared sa orig na bukod sa makapal e mbigat din).anak ng tokwa! perhaps i trusted him too quickly since he's a referral. anyway, again i bought an orig toyota ch gasket and AGAIN reassembled the parts.i'm glad wlang tama ung c.head.nung pinaandar, saw some bubbles pero mlmang trapped bubbles lng then after awhile wla na, pure flow nlng ang nkikita ko sa rad.i'll test drive this coming weekend since very busy ako sa work.

tnx sa mga advices tsikot members!