Tons of detail in there Doug... I too get a few little blue spots here and there.. They appear if i do a median combine, but not if i do kappa sigma clipping or average combine... strange... I remove them much the same way as Marc, with PS spot healing brush..
Marc is right, layering Ha in as a Lum layer in isnt the easiest of tasks, although when done right the result is usually pretty nice indeed
Well shot and processed.