Low oil pressure "new" Mast Motorsports LS3 427 - what next?

[XLexusTech]

Without name dropping without permission I can tell you there are two well respected builders who are members on this Forum.. (hint look in the project updates forum) who have had this issue...

Talk to them.. apperiantlty Mast was reluctant to fix the issue but eventually did... Reportedly cost both of them $$$ / time in the long run...