Are you doing the 150 strokes on leather or linen? Stropping on plain leather past a certain point usually has no further affect, probably around 60 strokes or so. Linen is more abrasive and doing a lot of strokes will have a mild honing effect.

In any case leather stropping will make an edge more comfortable as opposed to making a balking razor work better. Maybe a few strokes on a high grit hone is what you needed.