Thank you for replying.
I'm enlarging the neg about 5-6 times.
I don't have a strong lupe, so the neg looks okayish - it's a bit too soft for my liking and it could have done with a stop more exposure.
The enlarger is fine optically, properly aligned and pretty solid.
Lens stopped down to f;11 for exposure.
I hope that I've managed to attach a scan of the print.