I just purchased an Enfield Mk 4 No 1 from Gunbroker. The front sight is adjusted to the extreme right, although I have yet to fire it and this may be where it needs to be set, I would like to have the option of adjusting it. It was advertised as unfired and evidence suggests this to be the case. Any ideas on where to find the tool needed to make the adjustment? I am obviously new to Enfields and WW firearms in general (except for the 1911).