I am not sure what series Diawa you bought, but I am familiar with the size . The new Diawa's are awesome reels . The 2000 size though in my opinion is just a tad on the small side , especially considering that you are fishing it on the longer 1201 .

If you are fishing no larger than 8# line the capacity on the 2000 is fine . If not , you should consider the 2500 size .

As far as the series of Diawa that you are fishing , if it is any of the new ones , which it sounds like it is , they are great reels .

I have been fishing the Regal X and have been very impressed with with it's performance