The drops look good. I tested the hardware that now will be included in the module kits and I wanted to bring up a few points, some of which we discussed. The heatsink should be sanded fairly smooth with 180 grit wet/dry on a flat surface, thoroughly cleaned with soap and water, before installing the pads and transistors. Mainly you want to remove the machining burs and smooth the surface to a more even plain. Don't spend to much time on it but it must be done. The Sil pads can become contaminated with metal filings very, very easily. The metal chips will short the collectors to the heatsink, and believe me, enough to cause big problems. After installing the transistors, make sure there is no continuity between any collector and the heatsink! Try to minimize the removal and reinstalling of the Sil pads. The K-10 and SOT-32-3 (Q1, Q4 and Q5) packages do not need the insulated shoulder washer but require the metal washer. Use the M3x0.5x8 screws The two TO-220 (Q2 and Q3) packages require the insulated shoulder washer only. Use the M3x0.5x6 screws. I included images for the correct hardware/component installation.