I have a koa wood kitchen table that is getting gummy on top. Not sure what finish was put on it but it has several gummy spots and things stick to it. It also has cracks between the boards where caulk or something is chipping out. It is about 6 years old. Need advice on stripping, sanding or what to so to refinish and make this table look good and be able to be used by the family without worrying about homework sticking to the table. Wondering how to handle the cracks? Scrape out the stuff and leave them o fill with what? Any suggestions would be welcome. Please be detailed as I have never refinished wood before. Thanks!