This is wrong though. You should always be transparent and truthful about stuff and answer the cases on you. "The more you answer the scummier you look" is stupid.
answer with confidence , honesty and decency. If you remove every concern as soon as they rise - you won't ever get in trouble. Being active and present to answer will save you from getting lynched - regardless of your alignment
but putting that aside You shouldn't worry to much about being scum read (and thats not agsint my above suggestion you can do both). Just stay calm. whatever you do there will be some others who will interpret that as something scummy (sooner or later). You just need to be consistent and conscious about the game atmosphere and to not let it get out of your control.
and Thats me - who only got lynched twice in past year (about 50 games?) on MS (once as scum day 1 - when RC used a tricky tell) and once as town in lylo when I was exhusted from my teaching class and instead of defending myself I started criticizing the town!