Hi All. First post here for me. I bought a 5420T years ago and never played it much because it didn't sound great. I love the look of the guitar and finally decided to try to make it better. With pickup height change, I am inspired to play it now. I now want to make it even better. I scoured youtube trying to find fixes for the following issues but didn't find too much, so thought it might be useful to share and get input from the know how here. First up, The bridge was rattling. Took some waxed thread and wove it around the bolt heads. It works great. It put pressure in just the way you need it. The waxed thread had five separate strands. I removed 3 strands and wove the remain two. This gave the perfect interference for that space. It felt like flossing tight teeth. Give it a try and let me know if it worked for you. The wax thread is the type in camping repair kits. Pickup height: My pickups were 6mm away from the bottom of string to cover. This is with the screws cranked down. My bridge has to be really tall for proper action. I think this is the root cause. Neck at too high of an angle. Anyways I designed and 3d printed some pickup spacers in white pla material. Then painted them with silver sharpie marker. They work great. Spacer added 3mm. Shown in picture is early failure. I needed to cutout the area marked in pencil so the tab could reach to underside of original cover. you live you learn.