Swiss arms TG1

[AC all day]

Hi all.....so been asked to respring one of these for a friend.......on closer examination the spring is in sections hence the lack of power described to me. A quick call to SMK for the appropriate replacement spring.....way to short and graunchy as anything.....it didn't even have preload....
So my question to the collective does anyone know of a better spring that might fit please??
It has already got a steel tophat for some umph and a half reasonable guide but just lacking in spring

[SuffolkRifle]

Try Welsh Willy, he'll probably know which Titan will fit it

[Hartcliffer]

Try Welsh Willy, he'll probably know which Titan will fit it

This. It looks like yet another version of the XS19 (I've lost count of the number of rifles that use the same basic template), so he would be a very good place to start.