I wrapped the brass part of the dropin with a strip from a 24 ounce Monster. Copper wrap works the best but with the large soda can it thicker and only takes 1-2 wraps to fit it tight into the host. The aluminum strip needs a light scrubbing to get the coating off for better thermal and electrical contact. Normally “as is” with a 2.8 amp dropin works fine without a wrap. Those 7135/7138 chips come in 350 and 380 milliamp flavors. AMC7135