speed pad question

[ZC Cloud Strife]

Hello, i need some help when i make a speed pad there a kind of glitch that happen where i keep going back and forth if you want to know what i am talking about take a look at it.

http://www.sendspace.com/file/u58cx1

 

[BlueZero4]

http://ssntails.sepwich.com/srb2/specials.html#l65

Check the "Passue" box on linedef properties.

 

[ZC Cloud Strife]

Thanks! :)