Printing on Glossy material

Hi All,
I am having major issues when printing on glossy vinyl. When I do a print, the images come out with light colored blotchy spots on it. I have increased ink flow, quality settings, and have used the manufacturers suggested profiles. The results are that the images comes out way off on color and/or way to dark. I can take the same image and print on a matte finish vinyl, and it comes out great. The issue really shows up on Bitmaps. I can increase inkflow and quality settings to get vector and clipart images to print fine.
The materials I'm printing on are:

Avery MPI 1005EZ
3M Controltac
Oracal 3651M

Thnx for any help,
Bj Carter

 

I'm sorry,

Roland SP300V
the materials are listed above and I used the manufacturers profile as stated above. I got them from the manufacturers web-site.

Not sure If it makes any difference, but I use CorelX3 to designs with.
Thnx, Bj

 

I apologize guys, I have issues remembering to give all info, please bare with me.

I'm using versaworks and Eco-SolMax Inks.

I don't beleive It's dirty hands, because I'm 30 feet into the roll with trying different settings.

Thnx, Bj

 

The 30 feet was me not unloading the Avery material for that length Although your advice Is well noted and a eye opener. You know how the dust off a candlebat or moth looks like, If you get It on your hands? That's what it looks like.

I did just take it out and put in a sample roll of Orafol 3551Ra and it printed great, some of the drop shadows a little off, but I can fix that. It's like this material has a little more bite to it. I was wondering If the Ink wasn't having enough time to flow out?

I went and redownloaded profiles to reload, just In case i screwed them up earlier.

Thnx, Bj

 

yes

 

Thankyou guys for the help. I believe Gino and others were on the right track about contamination. I cleaned the vivyl and it printed just fine, except where I hadn't cleaned all residue off, you coulsd see wipe marks.
Thnx, Bj