hi im new to this site and new to DIY. i have a serious issue on my hands. I have undertook a big job on painting my raw wood banister and hand rail. after priming under coating and sanding untill wood was solid white. i decided high gloss onblack on my handrail. after x2coats ive noticed lots of drips and pull marks in the gloss which i do not like and doesnt give a smooth finish. question is do i have to sand right back when second coat fully dry then reapply, light sand and apply again. any info would be greatly appreciated and excuse my stupidness when it comes to painting