Ultimate Repair of Wobbly Chuck for Bosch Cordless Drill GSR 18v-Li / DDS181-02

This type of Bosch Cordless Drill is a workhorse but with one major flaw that may cause it useless especially for professionals seeking precision, a defected wobbly chuck that causes your bits to wonder all around and many times it bends or even breaks small bits. I have had this issue since I bought it, but it exaggerates by usage. I searched and find a lot of people complaining from the same issue but no one offered a solution except of buying a complete new chuck and gearbox exceeding USD100, thus most people ditch it and buy a newer model. This is why I decided to take the challenge and solve the problem for Bosch. Have a nice time.