Concorde question

I sent a young friend of mine the simaviation link to download a Concorde for his fs2002.
I gave him instructions to install everything and he managed that OK.
He's a bit too far away to visit and I have never tried the Concorde.
Problem is: he says that even on a long runway, he can only get the aircraft up to about KIS 185. Not enought to rotate.
He can't get it off the ground.
I was wondering if any of you had an idea what is going on there and what he has to do to get that puppy airborne.
thanks...Michael
I gave him instructions to install everything and he managed that OK.
He's a bit too far away to visit and I have never tried the Concorde.
Problem is: he says that even on a long runway, he can only get the aircraft up to about KIS 185. Not enought to rotate.
He can't get it off the ground.
I was wondering if any of you had an idea what is going on there and what he has to do to get that puppy airborne.
thanks...Michael