Manifold gasket used with DTLT

I've heard 50/50 responses about re-using the stock manifold gasket or not with the DTLT's. I re-used mine and could tell there was a leak coming from the manifold. I just, I mean just, was driving and wanted to hear when the rasp was kicking in with the new headers and as I did, I blew a gasket. Bout to get new ones and install them. Is there a problem with the stock manifold gasket and the DTLT's? I haven't seen any with all the many DTLT threads on here. I just wanted to make sure it was just because I re-used the old ones and had a leak that it blew. Not because the stockers don't work well with the Thorleys.
My poor truck . . . or crappy maintenance lol

Thanks in advance!

 

Not that I wold ever doubt your knowledge of the Taco Chris because you come up with some great stuff on here. I'm going to have to agree with you more than anything else on this one though. Being how I just experienced this first hand. lol I was just told by roxspin72 that a FelPro type gasket works on his. So I'm gong with that

 

st got the felpro gaskets. One side is flat and the other is more rounded. which side faces in and which side faces out? anyone?