I've just got some lead tape, as I intend to add some to my RDX 500 MP. However, the weight is only 1g per 8" long strip!... and there is only 36" of the stuff.... not even 5g. So if I wanted to add 10g to the handle... I need two packs... I will need to add ~70" of the stuff wrapped round the handle??? This seems very exessive too me, as I'd expect it to be more like 1g per 1". Is this normal?