same wif u..done d tappet tuning b4..the situation like this...
1st..engine knocking..do tappet tuning..sound gone..but still haf a bit..but idle not stable..suckss...
few weeks later..cant tahan..find another pomen.. he said tune till too ketat d..means d space too near d....tune it again..idle ok..but sound like b4..tiu..waste my $$ only...
few weeks recently..find a small v head..no cam 1..got valve n spring n tappet..think to hatam the head inside directly la...
one more thing...tappet tuning can save fuel mer?? just thinking it wont affect anything..just d sound not nice only...