paiseh,read wrongly...thought u looking for plastic screw
look for those big hardware store,ubi area has alot.
there 1 opposite the automega mart blk 301,hehe duno the unit but can see from the small rd:)
i like ur sump leh,actually this design diffcult to access section 1 and 2.
but with ur top flip door i think it very POWER
chiller coil will be in num 5 with the return pump si bo?