Getting vascular on Dbol and Test? WTF!!

Well, let me give you a quick re-cap and then get to the fucking question. 37 years old, 6'1 and on the 1 year plan. Started 6 months ago at 181 pounds and jumped to 205 in 2 months using 250mg of test. Stayed on test but tapered up and down in five week increments. 6 weeks ago decided to throw some Dbol in the mix during one of my "taper up" points. Used Euro Vets Dbol but it did not do dick to me except maybe 3 more pounds and I got more ripped. Ordered some Naps 3 weeks ago and started popping them at 25mg a day and now I am up to 210 and looking even more ripped and veins popping out more then ever. I expected a little bloat and some smoothness from Dbol but not vascularity. I am strong as a bitch though. I know my Dbol's are real and I posted some pics of it when it arrived 3 weeks ago. My question is why? Why am I not boosting up in weight with Dbol thrown in with the test? Is it because I have been on test so long? I am not really complaining since I am slowly gaining more size and getting vascular but jeez!! Did not expect that from Dbol.