Ended up finishing all the dimpling of all the remaining parts for the aft empennage. Made my first dimpling mistake as can be seen in the photo. Wasn't holding the part properly and on the second hammer strike I created an additional hole in the aft under belly skin. Luckily the hole resides in an area that will be covered by the right side skin so I simply drilled it out with a #30 bit and alodined the edge after deburring. No one but me will ever see it once complete as it will be buried deep in the aft fuselage.