Advice needed!

I maintain a portfolio of 14 excellent blue chip dividend paying companies. And I follow DRIP (Dividend Reinvestment Plan). When a company pays out dividends, I purchase shares of the SAME company. Using this strategy I get a compounding effect every quarter. The problem is that a company (Auto Manufacturer) has been paying out 80% of their profits (payout ratio) for the last five years. And I have been reinvesting dividends consistently. Now this particular company holds 15% of my portfolio, with the next highest company being at 9% (at current value). Should I sell some of the shares of this Auto manufacturer, as it’s getting too much of a risk to hold this much value in one stock. The company fundamentals are excellent though but outweigh my risk appetite. P.S this is a South Asian agricultural heavy machinery manufacturer, not listed on any American Stock Exchange.