Missing Parts for Hot Wheels Mega Garage Set—Need Help to Find Replacements

I purchased the Hot Wheels Mega Garage set, but I cannot find the right and left slide pieces to complete it. My son loves playing with this toy, but without these essential parts, it’s incomplete. I have searched for ways to purchase or replace these pieces but couldn’t find any relevant contact information or guidance.

I’m reaching out here in hopes of finding a solution. Is there a compatible model or replacement part I can use to fix this issue? I expect Hot Wheels to provide clear instructions on how to obtain missing parts or offer direct support. Please help resolve this as soon as possible so my son can fully enjoy his toy again.