Question: plot3d is patchy/bumpy

I'm trying to plot a function that is defined as an integral of another function. I know that the function is quite smooth with no singularities over the region that i'm plotting. However, the resultant surface plot is bumpy/has holes in it. I tried changing the integration method and lowering epsilon to increase the precision but it still is not working. Can anyone help? Thanks for your time.

Maple file:

RAFk.mw

Similar post:

http://www.mapleprimes.com/questions/149766-Plot3d-Of-A-Difficult-Integral#comment149769

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