Digital BW, The Print

I am having a problem with MIS VM inks puddling and streaking. I 
refill my cartridges myself and have done so since getting my Epson 
1280 from eBay this year. It happens at any random time, but more so 
after I refill the cartridge and let it sit overnight before putting 
it into the printer. My line of reasoning is related to the 
thickness of paper used. I use a lot of Office Depot Presentation 
paper for proof and also finished print. It is a matte paper 
product. If I use that paper, the chances of a blob or streak 
increases. I can then use a thicker paper (Epson Enhance Matte) 
immediately after a streaked print and then the print on the thicker 
paper has a very small chance of streaking and blobbing. Can anyone 
tell me if I am on the right track or not? 

Your friend in photography

Johnny Eades