I am looking for placement restrictions for a double sided reflow board. What  
 co                                                                             
 mponents can and can not be placed on the bottom side. Our concern is the      
 larger                                                                         
  (heavier) components might fall off during the second pass thru the oven.     
 Other                                                                          
  than chips and small SO packages we have little experience.  New and smaller  
 designs are pushing us toward larger components on the bottom side. Any and    
 all comments welcome.