left with "bumps"

[R.F.Bennett]

Gentlemen. 

Hi Ray,
See you're on line. Thought I'd say hello. And at the same time ask if you have any suggestions as to how I might rectify a problem I've got painting my Mariner. In attempting to  change a bit on the side I was compelled to sand and fill (wood filler).  But this has just caused me to continually sand and paint - always left with "bumps" that appear smooth to the eye and touch before repainting.

Suggestions?

[lastvautour]

It may be that the repaired area is absorbing moisture from the paint. Several coats of primer after your normal sealing may help.

Lou