+xTook a look at the data sheet - they don't expressly say that it is an out-of-autoclave pre-preg? They mention vacuum bagging, but it does technically still work with vacuum only pressure it is just difficult to reduce the void content. Would explain your flow issues for sure, those are about the results you will get if you use a regular pre-preg in an out-of-autoclave process.
Anyway, assume it is an ok pre-preg for OOA use and keep trying. Did you give my suggested cycle a go?
Actually they have claimed that this OOA prepreg & also I am applying vacuum pressure while giving the heat cycle through out the process.
I will try out the suggestion given by you and let you know in few days...