Hi. Is there a good way short of replacing the entire sill and or trim around window to fix rot? Is used a putty knife and scraped out a good deal of the rot as it was very soft and spongy, but I don't think I got every bit of it. What do you use to fill in the rotted area? Wood putty or epoxy? Here's a couple pics

Am I going to have to break down and use oil primer for re glazing some windows that I have? I guess it's not ok to use a latex primer? Do you primer under and then on top of the new glazing once it dries? I bought a jar of Dap 33 I believe and thought it would be as simple as just putting in the new glazing and then it dried over night. I didn't realize that you have to primer and paint the glazing and use oil primer, etc. I've never painted with oil paints and dread having to clean brushes in terpentine and stuff I guess, but if I have to .... Forgot to mention that all the windows are covered by storm windows. Don't know if this changes anything, probably not, but thought I'd mention it. I've never done any of this before. Thanks :)