Just got a Walburg sax, i cant find any info on the net about it. Heard of them? Also it has been in a box for 15 yrs, the top notes Left hand play ok but all the bass’ are warbling outta key. Shall i spray the key links with WD 40 or silicone spray? What the blazes is trumpet oil? Clean the pads with something? Rather try to get it going myself rather than pay a shop, say, so any tips appreciated, seems good just to have another sax anyways, cheers