First of all, values in this game aren't all on their supposed size, therefore game is not scaled properly.
Meaning that if you ask to fuck girl she will gladly accept, but than complain on pain or get fear on easiest touch.
Things gets worse if you have both (old 0.10.4e and new 0.21.3.f1) versions of games installed on pc and ocasionally run them, because values aren't same for both versions of game.
In old version of game (0.10.4e) cheats were enabled including that you could increase dick size in lenght and width.
Than you run new version of game (0.21.3.f1), where cheats are disabled and if you don't touch cheats, your dick stays big from older game version (0.10.4e) cheats, but is way bigger now because values aren't same in new game like they was in old version of game (0.10.4e).
How to prevent this ?
You have 3 ways (at least):
1. Run older version of game (0.10.4e), go to cheats and decrease dick size a lot.
2. Run newer version of game (0.21.3.f1), go to cheats and activate them, than you get message that cheats don't work, and dick will shrink to default size, but also most likely dick will be flacid too....
3. Install monkey for new version of game (0.21.3.f1), and when intervieving with model, open monkey window and change dick size.
(second option is worst btw)