you will find that with stock heads its more lopey that with bigger heads like the afr 165 or edels or something. the less restricted heads mellow it out some
heres my vert with afr 165 heads
ported cobra intake and stage 1 with 1.72 rockers
I know what you mean. It sounds really good at like 700-800 rpms, but doesn't like to idle when cold or coming to a stop, etc... I have mine at 1000 now too and no stalling problems.