rules in general as i know it,
1- get that material in faster, wham its in there.
2 - still got knit/weld line then slow speeds down try and fill slow around pin area, make shorts if poss without getting part stuck and follow with a high speed at the last few stages or viza versa depends where...
hi,
abs related concern,
I also had a problem where poorly moulded parts, months after moulding, starting taking in water, GAS marks on the product was the cause, as for some reason the parts acted like a sponge when gas marks had been produced (all ways by the night shift, setters joke lol)...