Hi Lorlin, long time no see in print! Before embarking on "doping" up those hammers I would suggest you check hammer location, (you can warp a shank so the hammer point goes or or down by lifting the front of the hammer or pushing it down while heating the shank with a flame) and I would also check to see that the strings are capable of greater sound by plucking them. This being said I would remove the action and hold it upside down to put juice on the underside of the hammer shoulders then invert it to put the same amount of the top of the hammers. Allow to dry for a while and check the sound. I would use a plastic bottle with a long spout and squiret it on in a controlled fashion. I prefer to make my solution by weighing ground plastic material and measured fluid so I can replicate exactly the solution I want. I weigh within 0.1 grams. and make 4 ounces at a time. If possible I would do this in stages of several days wait between treatments so make sure I am not going too far past the point I want to hear. If there are hammers that require but a tiny bit more use your finger or a piece of paper towel to put juice where you want it instead of pouring it on as I would the first few tries. It is also possible to wick juice up off a towel to the underside of individual hammers as needed. Hope this generalization is helpful. Newton
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