Right this weight thing really is gettin on my t**s at this stage!!!!! Early last year one of the american guys on here weighed all the 05 bikes on the same device..... My apologies, can't remember who it was, but do a search here on the forums & you'll find these results....
Gasgas Pro 70.7kg,
Raga Pro 67.1kg,
Sherco 2T 72.1kg,
Scorpa 2T 73.9kg,
Montesa 4RT 73.9kg
Beta 74.3kg,
Scorpa 125 4T 74.4kg.
Granted the bikes had no oil or fuel, maybe the 900cc of oil a Mont needs tips in over the edge weight wise?? Though the 1/3 less fuel it needs to cover the same distance possibly balances things out a bit....... Try one if you can, weight is not an issue once you're not coming from a Raga!!!