Jeezuz you are backwards. Come and join us in the 'new' century.You're just to lazy to drill the window frame correctly and use packers like the professionals do.
Same with the batten and the multi fix screw. Drill the correct clearance hole.
Why would you encourage someone to faff about pre-drilling clearance holes when all they need do is drill right through the work-piece and into the floor then hammer in a plug and screw in a screw.
Is this how they are still doing things in the Province?