Bit of advice from those who know about Premier pedal timps please. Earlier in the year I had to substantially tigthen the skin up on one of our pedal timps to get it in tune, in other words the pedal mechanism couldn't get the skin to play the notes the timp was supposed to be able to play. Recently I've noticed that the timp has the same problem again. To my untrained eye, the pedal mechanism seems fine, so..... do the skins stretch and hence slacken over time? If so, can you endlessly retighten or should you get a replacement skin at this point? Lastly, I think maybe it would be a good idea to have the set of timps looked at and serviced every now and again, but is there anyone out there who can do this work? the timps are about 15 years old and have never had a new skin or any servicing. Would be grateful for names. We are in Buxton, North Derbyshire, so names in travelling distance would be especially welcome as the timps won't fit in the post box!