Is retention wall too close to foundation?

Our foundation has 2 structural cracks that were sealed and stabilized with epoxy over 16 years ago by the builder. No movement or leakage since. However, they only filled the cracks up to ground level. Do you think it is ok to fill the remaining above grade portion with a DIY Dricore product or something similar? Asking now as we are in the process of finishing the basement. Are these DIY kits effective? Or should we just get a pro to inject them? Also, will filling the top portion of the crack with polyurethane or epoxy possibly compromise the existing injection? [img]https://cimg0.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1168x746/image_443e65b124d4250f19edfc65c1928b3d54d96ce1.png[/img]

Apologies if this question is better posted elsewhere, but my old man and I are new to working with concrete. We transferred a concrete countertop to a wooden counter base and a small crack formed down the middle of the countertop. The crack is barely noticable and the countertop is still structurally sound, but we only found out after the fact that the wood under it was not perfectly flat, leading to a small gap in between the concrete and the wood [img]https://cimg3.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1500x2000/img_1498_eb0a6d9322d0756be64c7454a251e8a38ac59491.jpg[/img] [i]Note: The wedge pictured on the left isn't increasing the gap size, as that is how big the gap was before we added it.[/i] My dad is concerned that the gaps will cause the crack in the concrete to deepen, as the crack goes all the way through. Do you guys have any ideas on how to fill the gap? I mentioned some kind of foam like DRICORE, but he is concerned that it will expand too far and push it up. Is there a better alternative that doen't involve removing the countertop for fear of damaging it further?[img]https://cimg7.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1500x2000/img_1499_a83c092bd4596d5d9c8b09a5cd5c8d238e9afc4e.jpg[/img] [i]The countertop probably weighs somewhere between 300-350 lbs[/i] If other info is needed I can provide.