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Is your oven installed in a cabinet? If yes, it may be possible to lower the oven. You�ll have to remove it, though...
I�d say your only option is to fabricate something that will raise the cooktop. Pics will help folks devise a solution. Sent from my iPhone using Tapatalk
Pour yourself a stiff drink, get out the check book and call a contractor before one thing leads to another and you end up completely remodeling your kitchen.
I think this is the smartest thing to do... but if I was smart I wouldn't be in this pickle, lol. Perhaps it's time to search yellow pages or yelp or ? Whatever you use to find qualified tradesmen.
We've had good luck with "Home Advisor." Don't know if you have such a resource where you are. Angie's List can be good also...