If you want full access to all our reports, data and investing ideas, join The Aerospace Forum , the #1 aerospace, defense and airline investment research service on Seeking Alpha, with access to evoX Data Analytics, our in-house developed data analytics platform.Butler National Corporation's ( OTCQX:BUKS ) stock price has fallen nearly 10% since my last report in March, strongly underperforming the S&P 500’s 12% gain. Looking at the performance and my prior assessment indicating more downside risk than ups ...